TWI344739B - Non-contact transmission device - Google Patents

Description

1344739 IX. Description of the Invention: [Technical Field of the Invention] The present invention relates to a connectionless device for transmitting at least the power and data signals to a device to be transported by electromagnetic coupling of a transmission coil. [Prior Art] As a square coupling (also referred to as inductive coupling) in a basin for charging a built-in rechargeable battery, power is transmitted from the charger. In addition, the charger in this manner is known to be in the exact, B. 〇丄Over the electrical state (in other words, the load); whether it exists on the charger, whether it is properly configured, whether it is normal, etc. Japanese Patent Publication No. 2006_230032 Patent Document 2: Japanese (4) 2 嶋 Q Q9m Patent Document 3: 曰 专利 Patent No. 2689927 [Disclosed] 曰C invention to solve the problem) Charger in standby without commercial configuration to commercial use In the case of the state of the power supply, I still have to keep the connected charger continuously consuming power. In this case, there is still a charger connected to the commercial power supply during the standby period, so that when the charging is performed, the η is used as the I source. It is possible to suppress the situation that it is necessary to enter each time the charging is to be started. In addition, the situation is caused by the connection to the commercial power supply, but the electromagnetic of the coil is used: However, the signal of the tributary of the power transmission will also encounter 3J9745 5 ^44739 .. to the same situation. The purpose of Ming is to provide a kind of use of the electromagnetic coupling through the coil to transmit the signal. At least one of the two is transmitted to the connected device to be used in combination: the standby power can be suppressed, and the invisible transfer device that can be removed to the commercial power source every time can be eliminated. (Means for solving the problem) The contactless transmission device uses the electromagnetic coupling and the contact point value of the transmission coil to transmit to the second transmission device of the transmission device, and the device is driven to drive the aforementioned coil; the system Β: pulse oscillator The output system clock, the monitoring clock oscillator, the monitoring clock whose output frequency is lower than the system clock, and the control circuit operate by using the system clock and the monitoring clock. And a control signal for the driver and a control for the system clock oscillator: the control circuit is in standby before the start of the transmission of the power and the data signal, according to the foregoing The monitoring clock outputs the system clock oscillator control signal to synchronize the system clock pulsator to the system clock oscillator control signal intermittently to rotate the system clock, and in the foregoing system In the output period of the pulse, the front and rear drive drives the coil to control whether or not the detection is disposed. Further, the output period of the system clock is preferably set to the time required for the detection. (Effect of the Invention) According to the above configuration, the transmission device intermittently moves the detection of the transmission device during standby. Therefore, while maintaining the connection to the commercial power source, the 319745 6 丄 to the commercial i source: the machine power can also eliminate each In addition, it is inconvenient to connect with each other. In addition, since the timing of the intermittent operation controls the monitoring clock with a low clock of the system, and the system clock itself is used in a limited manner during operation, this point can also be used. [Embodiment] FIG. 1 is a block diagram showing a transmission example for explaining an embodiment. Conveyor. . For the purpose of explanation, a non-contact transfer device for transmitting power and data to the device to be transferred is shown and an example of the device 200 to be transferred is illustrated. Electric power: The transmission system is implemented by a contactless transmission method in which the transmitting device 9 (9) and the transmitted position 2 (9) are electromagnetically coupled and electromagnetically induced. Here, the example of the device to be transported is, for example, various electric appliances, and the transmission device is a case where the chargers of the various electric appliances are used, but it is not limited thereto. • The transmission device 1〇0 is configured to include: a coil 102, a capacitor crying 104, a driver Η6, a control circuit 1〇8, a system clock oscillating; a timer η2, a memory 114, a reset circuit 116, and a capacitor : Use resistive state 120, and Zener diode (Zenerdi〇de) l22. The coil 102 is configured to be electrically connected to the coil 2 2 of the to-be-conveyed device 2 so that the transmitter of the electric power transmitted through the coils 102 and 202 can be configured, for example, by a planar hollow core coil. Limited. The end of the coil 1〇2 is connected to the driver 106, and the other end of the coil 1〇2 is connected to the driver 1〇6 via the capacitor 104. The electric waste supplied from the driver 106 to the coil 102 is exchanged and boosted by the line (10) and the capacitor 319745 7 1344739 104. • The driver 106 is a circuit that supplies a voltage to the coil 1 , 2, in other words, a circuit that drives the coil 102. An example of the configuration of the driver 1〇6 is shown in Fig. 2 . Further, for the sake of explanation, the coil 102 and the capacitor 104 are also shown in Fig. 2 . In this example, the driver 1 〇 6 is configured to include a CMOS (Complementary Metal Oxide Semiconductor) circuit 132, a CMOS circuit 134, and an inverter 136.

• The COMS circuit 132 is configured to connect a P-channel MOSFET (Metal Oxide Semiconductor Field Effect Transistor) 132p and an N-channel MOSFET 132n, and MOSFETs 132p and 132n in series between the power supply voltage V and the ground potential. The poles (connected to each other) are connected to the one end of the coil 102. The driver control signal SD output from the control circuit 1A8 is commonly input to the gates and the gates of the MOSFETs 132p and 132n. Further, the power supply voltage V is generated by, for example, converting a commercial alternating current power source by an AC Lu adapter (AC-DC converter) (not shown), and the AC adapter may be provided in the transmission device 100. It may also be external to the transmitting device 100. The CMOS circuit 134 is configured such that a P-channel MOSFET 134p and an N-channel MOSFET 134n are connected in series between the power supply voltage V and the ground potential, and the drains (connected to each other) of the MOSFET 134p '134n are connected to the coil 102 via the capacitor 1〇4. another side. The driver control signals SD are commonly input to the gates of the MOSFETs 134p, 134n via the inverter 136. 8 319745 1344739 by this constitutes when the driver control signal SD is at the H (High) level. . The MOSFETs 132n, 134p become conductive. Conversely, when the control 仏5 tiger SD is driven to the l (Low) level, the MOSFETs 132p, 134n will be defined as . When power is to be transmitted from the transmitting device (8) to the transmitted device 200, for example by alternately overriding the driver control signal

The level L is applied to the coil (10). When various data signals are to be transmitted from the transmitting device 1〇0 to the device 200 to be transferred, for example, by adjusting the level of the ϋ in the driving signal SD. [The pulse width or period of the level is applied to the voltage corresponding to the transmitted data to the line m2. The control circuit 108 is configured to supply the system clock (also referred to as the main clock) (10) from the system clock oscillator 110. The monitoring clock (4) ιΐ2 is supplied with the monitoring branch LFG, and includes a logic circuit that operates using the clocks (10) and LF〇. The control circuit (10) generates, for example, a driver control signal SDJi, and reads to the driver 1 (). 6. Details will be described later. 108 Hunchun pure clock oscillation 11 11G is configured, for example, to include a crystal oscillator 11a, and an oscillation circuit connected to the oscillator u〇a. Also, it can replace the crystal oscillator. A ceramic oscillator or the like is used. The galvanic circuit listener operates the crystal oscillator ll 〇 a stably, and converts the output of the crystal oscillating device into, for example, a rectangular pulse wave and outputs it as a system clock (10). The frequency of the system clock (10) is, for example, 32 MHz. The system clock cover state 110 is provided to be able to supply the system clock CK0 to the control circuit (7) 8. As will be described later, the supply of the system clock CK0 is configured to be controllable by the clock supply control signal S60 from the control circuit 108. 319745 9 1344739

& depending on the pulse oscillation ^ (4) The frequency is lower than the system clock (10) 250kHz clock LF〇 and output. The monitoring clock_Z is configured to include, for example, an RC vibration path H2a composed of a resistor and a capacitor, and a vibrating circuit b connected to the RC oscillation circuit ma. The oscillating circuit lm causes the oscillating circuit ιΐ2& to operate stably, and converts the output of the circuit 112a into, for example, a rectangular pulse wave and outputs it as a supervisory clock LFO. Monitoring the material pulse oscillator ιΐ2 system setting: It is sufficient to supply the monitoring clock LFO to the control circuit j 〇8. The memory U4 is set to be accessible by the control circuit 1 to 8, for example, to transmit the stored predetermined information D to the control circuit 1 to 8 in accordance with the read command rd from the control circuit 1-8. The memory ιΐ4 is composed, for example, by Mask R 〇M (Mask Read Only Memory; EEPROM EEPROMCBiectHcan, BrasaMe and Programm; M: ead〇nlyMem〇ry; electronic erasable programmable read only memory) . As an example of the information D stored in the memory 114, for example, the H level and the [level of frequency], in other words, the driving frequency of the coil 102, which is driven by the control signal II, are exemplified. The reset circuit 116 is a circuit's control circuit (10) that performs resetting of the overall control circuit 1 to 8 and is restarted by receiving the reset signal RE from the reset circuit 116. The reset circuit 116 is grounded via the capacitor 118. Regarding the resistor 120, one end of the other end of the coil j 〇2 is connected to the control circuit (10), and is also grounded via the Zener diode 122. Thereby, the voltage (or current) of the other end of the coil 1〇2 is input as a money vc to the control circuit 319745 30 丄 344739 108 ° via the resistor 120 and 'by the resistor 12 齐 and the Zener diode Body 122 protects control circuit 108 from excessive input voltage. The voltage VC is used to detect whether or not the transmission device 1A and the to-be-transmitted device 2 are electromagnetically coupled. The σ to be transported device 200 is configured to include, for example, a coil 202 composed of a planar hollow core coil, a rectifying and advancing circuit 204, a control circuit 2〇6, and a load 208. Wherein the load 2 〇 8 is, for example, a rechargeable battery. The rectifying and smoothing current=the circuit 204 is a circuit that integrates electric power and the like that is transmitted from the coil 1〇2 to the coil 202, and is configured to include, for example, a one-pole bridge circuit connected to both ends of the coil 2, and a parallel connection. A capacitor for the output of the diode bridge circuit. Also, the negative 208 series is for example connected to the output of a diode bridge circuit. Here, for convenience of explanation, circuits that perform various controls in the transmission device are collectively referred to as control circuits 2〇6. The control circuit is configured, for example, to be capable of controlling the voltage supply to the line 2〇2, and by changing the voltage, the data signal can be Μ = • 2:0 via the stitch track 1〇2. Transfer to the transfer device丨. . Example of data signal = m data to be given to the device 200 to be transported, and the like. An example of the configuration of the control circuit 1A is shown in Fig. 3: "Shen Ming" is also shown in Fig. 3 with a system clock oscillator u_processor 112. In addition, the fourth diagram shows a timing chart of an example of the operation of the material =. , . . In the example t of Fig. 3, the control circuit (10) is configured as two 52, a driver control signal generating circuit 154, a load checker (Wr) 158, and a clock supply control circuit (10), - encountered, the side 319745 11 1J44/39 Element 152 154, 156, 158, 160 can be configured with logic circuit to form control circuit 1G8 as logic IC (Integrated Circuit) zero (10) t = Γ: system clock CK 〇 ' is supplied and system time The clock CK, for example, hundreds of clocks CK, for example, the information D of the frequency division value, is stored in the memory 114 (refer to the figure), and in this case, the frequency divider 152 can be configured to be transported. 1 〇〇 Start: Heart D and utilized for the generation of clock CK1. Here, the clock (five): goes to the driver control signal generating circuit 154 and the load detector 156. The driver control signal generating circuit 154 uses the clock (five) to move the second signal to control the signal (10). For example, the -Bell (4) of the driver control card SD can be stored in the memory 114. In this case, the driver control signal generating circuit 154 is used when the transmitting device is just started, and the control signal is generated. . Here, drive the Pirates II! The nickname SD is output to the drive 1〇6 (refer to the figure). The I load detection 1 156 is a detection transmission device 1 and a transmission device. The transmission coils 102 and 2 are placed in an appropriate electromagnetic surface state to generate a detection result signal S56. For example, the above-described detection system can perform a state in which the phase of the clock K1 and the phase of the electric ink VC are in the state of being properly/magnetically transferred to the transport device 1 by the transfer device 200 (regular) In the load state), the other states are different. For example, when comparing the phase of the voltage VC and the phase of the clock (2), it will be the same under the normal load state, and will be extended in the state of no electromagnetic rotation of the farm 200 (no load state). 319745 12 1344739 The 'negative wear detector 156' can detect whether it is in a normal load state by comparing the phase of the clock CKi with the electroacupuncture VC. Furthermore, the detection can also be carried out, for example, by using the amplitude of the voltage VC. For example, A generates resonance through the coils 102 and 202 in a normal load state, and the amplitude of the snow pressure is higher than that in the no-load state. Therefore, it is possible to detect whether or not it is normal by comparing with the amplitude of a predetermined reference voltage. Negative (four) state. Here, for example, when the conductive material of the non-transmitted device 200 approaches the line (foreign matter load state), since the phase and amplitude of the voltage vc are different, the load and the state of no load are different, and therefore, the foreign matter load state can be detected. . Further, it is also possible to determine the normal load state by using the ID data given to the device 2 to be transferred.

Fig. 3 exemplifies a case where the load detector 156 is constituted by a pure detector 156a for performing the above phase and a frame for comparing the amplitudes described above. In this case, since the load detector 156 can generate the detection result signal S56 based on the two detections of $156& and 15 minutes (four), the detection accuracy becomes high. Here, it is exemplified (refer to FIG. 4) that when it is judged that it is in the normal load state, the detection result signal S56 becomes the Η level, and when it is judged that it is in the abnormal load state, the detection knot #U S56 becomes the L level. The case of a waveform. Here, the detection result signal S56 is output to the clock supply control circuit (10). Further, it is also possible to constitute the load detector 156 only by the phase detector 156a and the amplitude detector (10). Further, for example, the information D related to the comparison reference value used by the detectors 15^, (10) may be stored in the memory 114. In this case, the load detector 156 may be configured to be activated when the transport device 1 is started. 319745 13 丄J44/jy et al. obtained this information D and used it for detection. The leaf timer 158 is supplied with the monitoring clock lf〇, and the pulse LFO is used to generate the timer for the Lulu. The temple is crying here (see Fig. 4). The metering LF1 is intermittently changed. (migration) is the h-level, and continues for a predetermined period of time, the Gubu & $ / μ Η level situation, in the material 11 (four) (3), such as the period of = for example, 250ms (milliseconds), H-level pulse wave Width system (four) microseconds). For example, the negative D of the above-mentioned period or pulse width may be stored in the case of the commemorative office 1 and 4 in the case of the transmission, which may be configured as the timer (5) LFIMs = material acquisition" and used in the timer. At the same time, the timing signal - to the clock supply and the leaf: the two-system circuit 160 is supplied with the detection result signal S56 two Gi l1' and according to the signals S56: _ ent S60. The clock supply control signal s S56 and timing The signal is not good enough to measure the junction. In addition to the other situation, μ. When one side becomes H level, and ^ S56^LFi 4 , 隹 + ^ is H level, signal S60 becomes η. In the case of a bit shape: = wide number 856, the wave LF1 exemplified above is used as the 浐:: the working circuit 160 can be constituted, for example, by a circuit (logical OR circuit) of the circuit of the signals S56 and (10), the s Two 1C is the clock supply control signal s6°. The signal circuit 154. The oscillator 11G and the drive (4) (4) signal generation clock supply control signal (10) is equivalent to an enable signal of the system clock recorder ι 314745 14 generation circuit 154, where the pulse supply control signal S60 is generated by the control signal The circuit S60 can be two: ^: 1: is configured by the clock supply control signal, for example, on the power supply path of the MO τ τ / UG, which is set in the gate: The supply control signal (10) can be controlled by the external two: 曰: conduction OFF (〇Ν·(10)). This _ET equals two: the device is wide and the oscillation ^ circuit '(10) is set between the path setting":: element: the output of the system clock can be based on the above composition, when detecting 0 士果ρ骑ς α炎τ 4 in the picture -., time t 1 ^ ^ ° fruit ^ ab S 5 6 is the L-bit punctuality (when referring to, the transmission is set] 〇〇 / i, when not in the normal load state f set 1 〇〇 _ become Storage status. During this standby period, the transmission ^: intermittently performs the detection of the transported device 2〇. In Figure 4

During the timer period, the clock supply control circuit (10) synchronizes the clock supply control signal S60 to the H-cycle clock (four) 110 in synchronization with the shift to the H level. System clock (10). The supply system clock (10) system 35 pirate control signal generating circuit 154 outputs the driver control to the drive state 106, thereby supplying a voltage to the coil 102. This is the supply period of the system clock (10), and the load detector 156 is operative to subscribe to the load detection described above. The load detection system is, for example, i seconds 329745 15 进行 4 times. The timing of crying in this case is, for example, 250 ms. . . . No. LFWH level cycle system / In order to perform the above-mentioned phase detection and amplitude detection, it is necessary to obtain the voltage VC's variation r, the swimming material &, , ^ line... Because the electric *vc change is affected by the pulse CKO secret The effect of the delay of the mountain t, so during the output period of the system clock CK0 (here, the timer signal two pulse if system is set to the time required for load detection, for example, 128 second pass, '^ trT difficult load When the normal riding state is detected by the check-in, = and: the transmission of power or the like is started (refer to the time t of the fourth figure), and the body of the test result signal is changed to the level of the test, and the clock is seven. , the control circuit signal S60 will be regardless of the % pull ten $ benefits # 唬 £ F1, continue to maintain a 2 level. According to this 'self system clock oscillator m _, and the driver control signal produces electricity "4, etc. = The transmission of electric power, etc. is performed. According to the above-mentioned intermittent operation, the power consumption is maintained even during the period of staying connected to the commercial suppression standby period. Further, by using the commercial power source, the commercial power supply can be eliminated. Inconvenience. Due to the suppression of standby power, For example, in the case of 3·COMS logic, the operation of the control circuit 1〇8 in the case of the system clock CKO of 3 2 MH z is used. Electricity: The movement time is about 2. In contrast, by intermittent driving, it is possible to = the size of the circle (10), and the power consumption of the core (10) varies depending on the transmission power. 16 1344739 Ancient, ΐ 痒 itch power and other transmission efficiency, the system clock is wide; b and 'and the higher the frequency, the better. This is for example, by adjusting the frequency value of the t-frequency according to the inductance value of the coil. Moreover, it is possible to fine-tune the line_drive_<and, in addition, by means of a stable and high-frequency system clock, it is possible to mention, measure, receive from the transmitted device, identify the ID, etc. = :° 'Because the power consumption of semiconductor devices such as integrated circuits is proportional to the frequency of the system clock, the higher the frequency of the system clock, the more power consumption of the device increases. Therefore, the high efficiency transmission accuracy is improved. (4) With the reduction of power consumption into a trade-off (four) eof = two: in the case of The transmission of the pulse operation is Wei Bai, and the 'consumption: f' is such that the power consumption of the driver is higher than H in the transmission of electric power, etc., and the standby towel is in a trade-off relationship with the improvement of the detection accuracy of the load. In the splicing apparatus 100 of the embodiment, even when the frequency is increased, the power consumption can be increased by the above-described intermittent operation. Therefore, it is possible to suppress power consumption. "• Only the transmission to the efficiency, the improvement of the load detection accuracy, etc. Power H ' In general, the higher the vibration frequency, the consumption of the vibrator itself; ^ A. In contrast, in the implementation of the shape s In the transmission device 100, this is limitedly utilized by the =clock CK0 itself during intermittent operation, because the timing of the pulse oscillating device 110 itself is relatively constant. Can reduce power consumption. Further, since the frequency of the monitoring clock LF0 used by the intermittent artery (10)/ is lower than that of the system, even if the monitoring clock oscillator 112 is constantly operated 319745 17 1344739, the power consumption is still higher than that of the system clock. The case where the oscillator 110 operates constantly is low. In addition, since the monitoring clock LF 〇 does not need to be synchronized with the system clock C 0 0', the integration of the system as a whole is less restricted. Therefore, it is considered that the operational accuracy such as the vibrating accuracy of the pulse-pulsing S112 and the timer 158 is lower than that of the system clock-resonator 110 and the frequency divider 152, and it is also easy to see the intermittent operation. In addition, the circuit scale can be made smaller than the configuration in which the system clock is divided to generate the k number LF1. Here, the waveforms shown in the above description and FIG. 4 are not the above-described examples. For example, the transmission device 1A may be configured to use a waveform other than the waveform or a rectangular wave in which the h' position is reversed. For example, if the transmission is set to 1, the pulse widths of the monitoring clocks lf〇 and ^1 and S60 may be different. In addition, in Fig. 4, the timing signal (5) is increased in the first shape in synchronization with the rise of the monitoring clock LF〇, but it may be configured to increase as the timer money LF 〇 decreases, and other waveforms are also increased. The operation can be as follows: in the above, the memory 114 is externally exemplified [simple description of the drawing] in the storage control circuit 108. Fig. 1 is a block diagram showing an example of an embodiment of the present invention. 〃丨 k k 戒 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图(4) '(4) Transmission of agricultural equipment Fig. 3 is a block diagram showing an example of a control circuit for explaining the transmission device 319745 18 of the embodiment of the present invention. The illuminating system shows a timing chart for explaining an example of the transmission shock 妁 operation of the embodiment of the present invention.主要, 衮 [Main component symbol description] 100 transmitting device 102, 2〇2 coil 104, 118 capacitor 106 driver 108 control circuit 110 system clock oscillator 110a crystal oscillator 110b oscillator circuit 112 monitoring clock oscillator 112a RC oscillating circuit 112b oscillating circuit 114 memory 116 reset circuit 120 resistor 122 Zener diode 132, 134 CMOS circuit 132n, 134η N channel MO! 132p, 134p P channel MOSFET 136 inverter 152 frequency divider 154 Driver control signal generation circuit 156 Load detector 156a Phase detector 156b Amplitude detector 158 Timer 160 Clock supply control circuit 200 Transmitter 204 Rectified advancing circuit 206 Control circuit 208 Load CKO System clock CK1 Clock D Information LFO Monitoring clock LF1 timer signal SD driver signal 19 319745 1344739 ' S56 detection result signal S60

• RD read command RE *; VC voltage clock supply control signal reset signal

20 319745

Claims (1)

1344739 卜, application patent scope: The contact transmission device transmits the contact point by using at least one of the transmission line power and the data signal, and has: ^ to the drive without the drive, the drive The coil; the system clock oscillator is the output system clock; the monitoring pulse oscillator is the monitoring clock for the output frequency; and the frequency-to-peak ratio is low, and the rj= is the system The clock and the monitoring clock 乍 'and the control signals for the (4) (four) and front H-pulse oscillators for the driver; the control circuit for the ', , , and the control circuits start the power and the data signal r 1彳In the standby (4) standby, the above-mentioned system clock is controlled by the control signal of the clock oscillator, and the above-mentioned system clock signal is controlled by the control signal of the clock oscillator to intermittently output the system clock. The output of the system clock: during the month, the drive of the aforementioned transmission device is configured by the drive driver controlling the signal to be driven. 2. The contactless transmission of the item of the scope of the patent application, wherein the output period of the aforementioned system and the first % pulse is set to the time required for the aforementioned detection. 319745 21